Bourbon may be closely tied to Kentucky in the public imagination, but its legal story is wider than one state. It can be made anywhere in the United States, as long as it follows the rules that give the spirit its structure, sweetness, and oak-forward character.

For Birmingham, Alabama, that detail matters. For more than a century, the city had no locally distilled bourbon carrying that comeback story. Dread River changed that with a Straight Bourbon distilled from 60% corn, 30% wheat, and 10% malted barley.

To understand why that matters, it helps to follow the grain, the fire, the oak, and the time. In this blog, we’ll walk through how bourbon is made, what separates bourbon from other American whiskey, and how Alabama grain finds its way into a Dread River barrel.

What is Bourbon?

Bourbon is American whiskey with a stricter set of rules. It must be made in the United States from a fermented mash of at least 51% corn, distilled at 160 proof or less, entered into new, charred oak barrels at 125 proof or less, and bottled at 80 proof or higher. Straight bourbon carries additional aging and additive standards.

One stubborn myth says bourbon has to come from Kentucky. It does not. Kentucky shaped the category, but federal rules allow bourbon to be made anywhere in the country. That is why Alabama bourbon is not a contradiction. It is part of the larger American whiskey story.

In plain terms, bourbon is grain, yeast, oak, and time working together. Corn brings sweetness. Oak gives color, structure, vanilla, caramel, and spice. The result is a whiskey made gold by patience, heat, and wood.

How Bourbon Is Made: The Step-by-Step Process

Making bourbon is less a factory line and more a sequence of decisions. Each step shapes sweetness, texture, aroma, proof, and the way the final pour carries its place.

Step 1: Mash Bill Selection

A mash bill is the DNA that determines the character of the whiskey long before any actual character forms. Simply put, bourbon must be 51% corn by law. Everything after that is a matter of artistry.

Dread River uses 60% corn, 30% wheat, and 10% malted barley. Corn gives the whiskey its candied sweetness. Wheat brings a silky texture. Malted barley helps fermentation along. Going wheat-forward instead of rye influences everything else about making our whiskey: softness over sharp spice, balance over force.

The basics of American whiskey begin right here, with understanding how mash bills affect flavor. That is why a mash bill is not just an ingredient list. It is the first flavor decision.

Step 2: Milling, Mashing and Cooking

To understand how bourbon is made, start with how grain becomes sugar. The grains are milled, then cooked in water to convert their starches into fermentable sugars.

Corn requires the highest temperature, followed by wheat and malted barley, which is cooked at the lowest temperature because heat can damage the enzymes in the malt. The result is a warm mixture of starchy grain and sugar, ready for yeast to begin its work.

Step 3: Fermentation

Yeast enters the cooled mash, and an invisible architecture begins to form. Over 72-96 hours, sugar turns into alcohol and a complex array of flavors, including esters, aldehydes, and early flavor compounds that will later find their way into your glass.

This is where bourbon-making becomes a living process. The result is a low-proof, grain-based liquid often compared to unhopped beer. It may not taste like finished bourbon yet, but the foundation is already there.

Here, old-world craft and precise chemistry meet without making the process feel cold or mechanical.

Step 4: Distillation: Concentration and Character

This process is one of both concentration and clarification. By law, bourbon must be distilled at no more than 160 proof. The process is intense yet controlled, preserving the character of the corn, wheat, and malted barley.

The goal is not to strip it clean. The goal is to carry the corn, wheat, and malted barley forward with enough clarity to become bourbon. That is how bourbon is made when character still matters.

The federal proof standard exists for a reason: bourbon should still taste like the grain, the process, and the place that shaped it.

Step 5: New Charred Oak and Whiskey Aging

New, charred oak barrels are non-negotiable by law and by taste. The charred wood filters the spirit while the toasted oak beneath it adds flavor, color, and structure.

During the whiskey aging process, heat and time move the spirit in and out of the oak. In Alabama’s warm seasons, the barrel conversation can feel especially alive. Vanilla, caramel, toasted oak, baking spice, and amber color begin to build with each cycle of expansion and rest.

This is where raw spirit becomes bourbon with depth. The barrel is not merely a container; it becomes one of the defining ingredients.

Step 6: Proofing, Bottling, and Selection of Barrels

At this stage, water may be added to reach the chosen bottling proof, never below 80 proof for whiskey. Barrel selection and small-batch blending choices also take place here, depending on the expression.

All the variables come together to create the version of bourbon that finally reaches the glass. For our Straight Bourbon, the goal is a finished pour that feels balanced, structured, and true to the grain and oak that shaped it.

Curious how those choices taste after the barrel does its work? Explore our Straight Bourbon Whiskey for the finished expression of Alabama grain, oak, and time.

What the Process Tastes Like in the Glass

Corn lends sweetness; wheat softens the mouthfeel. Oak becomes vanilla and toasted caramel. Each and every decision made at the distillery, each ratio of grains used, each degree of char, each year aged in the barrel room, becomes an expression felt on the tongue.

Dread River’s Straight Bourbon is exactly that sort of experience: vanilla, toasted oak, caramel, and baked spice. Those notes do not appear by accident. They come from the mash bill, the barrel, the proof, and the patience behind the pour.

This is how bourbon is made at Dread River Distilling, where intention matters, and where the mash bill carries meaning, in a city that’s bringing back its distilling history.

Dread River Single Barrel Straight Bourbon Whiskey $74.99 Add to cart

Dread River Master Series Batch 2 Veteran’s Edition Bourbon $89.99 Add to cart

Dread River Straight Bourbon Whiskey $52.99 Add to cart

FAQs

How is bourbon made and what’s the difference between bourbon and whiskey?  

Bourbon is made like whiskey, but it must follow stricter U.S. rules for corn content, proof, new charred oak barrels, and production in the United States.

Where is bourbon made?  

Bourbon must be made in the United States, but it does not have to be made in Kentucky.

What gives bourbon its flavor?  

Grain shapes the base, yeast builds early character, and new, charred oak adds color, vanilla, caramel, spice, and structure.

What is Dread River’s mash bill?  

Dread River’s Straight Bourbon is made from 60% corn, 30% wheat, and 10% malted barley.

Taste the Alabama Side of Bourbon at Dread River

Bourbon production starts with the grain, goes through fermentation, distillation, oak aging, proofing, and time. The art of bourbon making is a story in six chapters, and each chapter leaves a mark on the glass.

For us, that story runs through Birmingham. It is in the wheat-forward mash bill, the barrel room, the warm Alabama rhythm, and the finished pour waiting at the end.

Visit Dread River Distillery Co., taste the bourbon, and follow the story from Alabama grain to our barrel.